Fiat Stilo 1.6 16V reparier ecu - Help

[CarMirek]

Hello
Please could anyone help me to repair ecu for Fiat Stilo. The diagnostics shows defect of throttle-valve but the problem is with ecu. In attachement is shown by the pen what is wrong on the ecu. Parts are: 4x 1R0, MC33186DH and 2x bipolar condensator. When I change all these parts then the ecu is absolutely functional but in a short time the ecu doesn?t work again. Does anyone have any idea what I can do or if I forget anything?
Than you very much in advance

CarMirek

[yellowstilo]

maybe there is a diode faulty meant to dampen the induction voltage of the throttle motor ?

[CarMirek]

Hello
I checked the datasheet for this part of ecu no. MC33186DH and according to that I found out that pins 6,7,14 and 15 are connected directly with throttle-valve (the wires 6 and 7 are connected together and then 14 and 15 are connected together.)
I don?t understand why the new parts can stop working again and again. Does anyone have any idea why this is happening?
thanks in advance

CarMirek

[oguztokgoz]

why i cant open jpgs?

[etronic2]

Hello
I checked the datasheet for this part of ecu no. MC33186DH and according to that I found out that pins 6,7,14 and 15 are connected directly with throttle-valve (the wires 6 and 7 are connected together and then 14 and 15 are connected together.)
I don?t understand why the new parts can stop working again and again. Does anyone have any idea why this is happening?
thanks in advance

CarMirek

Think...

Resistors are like fuses in this circuit. They get burned because of overcurrent.
Have you checked yhat you throttle body is OK? Maybe it's stuck or maybe motor inside it has a schort circuit in coil.
One thing for sure: draws too much current and that's why burns components....

[soft4ecu]

Think...

Resistors are like fuses in this circuit. They get burned because of overcurrent.
Have you checked yhat you throttle body is OK? Maybe it's stuck or maybe motor inside it has a schort circuit in coil.
One thing for sure: draws too much current and that's why burns components....

100% agree, I would change throtle body and test.

BR

[Sendi]

I have the same problem. Failure (misfiring) on High voltage coil on spark plug cause it.

[antonioguay]

yo tengo el mismo problema ?como lo solucionaste? gracias saludos